网络与数据通信 协议体系与组成结构 释文 data circuit-terminating equipment, DCE 数据电路端接设备
- X-wind model
- X-window system
- xyelid sawfly
- xylan
- xylanase
- Xylander
- xylazine
- xylazole
- xylem
- xylem parenchyma
- xylem ray
- xylem transport
- xylene
- xylene poisoning
- xylenes distillation separation
- xylenes isomerization
- xylenol orange
- xylenol orange (XO)
- xylitol
- xylocaine
- xyloglucan
- xyloid
- xylolite
- xylonic acid
- xylonite